Valerie buys 3 new dresses on average every year for the last 5 years.
Valerie buys 3 new dresses on average every year for the last 5 years. In order to increase her average to 4 dresses per year, how many dresses should Valerie buy next year?
Answer/Solution
9
Steps/Work
Solution
Average of 6 years = 4 .
∴ Required number of dresses= (6x4)-(5x3)
= 24- 15
= 9.
Answer D
Average of 6 years = 4 .
∴ Required number of dresses= (6x4)-(5x3)
= 24- 15
= 9.
Answer D